Th isn’t a word, next

The is a word, look up ‘reis’, not a word, next

Ther isn’t a word, next

There is a word, look up ‘is’ it is a word, return true

If you don’t want to ignore whitespace, than I’m not sure what behavior you want, you want “there is” to return false?

If whitespace is the delimiter the whole thing is trivial, you split on space.

I am now more confused.